Nvidia 2xxx or 3xxx series (+LHR) cards can dual-mine with Etherium using t-rex miner. Hardly any reduction in Eth hash rate.
I have used 2080ti, 2070, 2060KO, 1660ti all OK.

The 1xxx series cards don't dual mine well (low hash rate). I tried EVGA 1060.
You could use them to single mine just Alephium but newer series cards and dual-mining will be more profitable IMHO.